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The new (g-2) m experiment at Fermilab

The new (g-2) m experiment at Fermilab. E989 goal: measure the muon anomalous magnetic moment to 0.14 ppm precision. New Physics and (g-2) m. Anomalous Magnetic Moment. g. From Fermilab facilities design report. m. m. Three general classes: I: Order 100 GeV with weak couplings

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The new (g-2) m experiment at Fermilab

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  1. The new (g-2)m experiment at Fermilab E989 goal: measure the muon anomalous magnetic moment to 0.14 ppm precision New Physics and(g-2)m Anomalous Magnetic Moment g From Fermilab facilities design report m m • Three general classes: • I: Order 100 GeV with weak couplings • ⇛ within current sensitivity ( W, Z, GF…) • II: Several hundred GeV with enhanced couplings • ⇛ within current sensitivity ( SUSY + tanb ) • III: Several hundred GeV with weak couplings • ⇛ within sensitivity of new (g-2)m exp at FNAL • ⇛Large overlap with Tevatron/LHC program ??? EW QCD QED g g g W W m m m m m m n p e QED + EW: Miller, de Rafael, Roberts, Rep. Prog. Phys.70, 795 (2007) HVP: Davier, Hoecker, Malaescu, Yuan, Zhang, Eur. Phys. J C66, 1 (2010) HLbL: Prades, de Rafael, Vainshtein arXiv:0901.0306v1 [hep-ph] Exp: E821, PRD 73, 072003 (2006) (g-2)mand the global program Isidori arXiv:0710:5377 Expands planned lepton flavor violation program Precise determination of fundamental parameters e B+→tn New (g-2)m (g-2)m tan b m Complements ongoing flavor program m m m(H+) Isidori, Paradise, PLB639:499,2006 Why Fermilab The experiment Shim magnet to Count positrons with new, segmented calorimeters Use existing E821 storage ring from Brookhaven Can use existing production facility 10x longer p decay channel 5-10x higher m / p 5x higher fill rate so same instantaneous rate Polarized m at pmagic 2p/wa #positrons versus time maps spin precession 21x E821 stats in < 2 years leads due to precession Status Future Next few years: World class m program at Fermilab with new (g-2)m and Mu2e Strongly endorsed by US Department of Energy Intensity Frontier Review in August 2010 New (g-2)mexperiment, E989, granted Stage 1 approval by Fermilab in January 2011 International collaboration of >70 scientists in 22 institutions ready and able to conduct experiment. Can take data as early as 2015. Dedicated m EDM exp. Next generation: Continue and expand program using available intensity from Project X Next generation Mu2e g-2 of m- Your Name Your institution your email

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